<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        <input type="text" v-model="num">
        <button v-on:click="num++">点赞</button>
        <button v-on:click="cancle">取消点赞</button>
        <h1>{{name}} ,非常的帅,有{{num}}个人为他点赞!</h1>
    </div>
    <script src="./node_modules/vue/dist/vue.js"></script>
    <script>
        let vm = new Vue({
            el:"#app",
            data:{
                name:"wcj",
                num:1
            },
            methods:{
                cancle(){
                    this.num--;
                }
            }
        })
    </script>
</body>
</html>